WO1997016938A1 - Amelioration du logiciel pour telephones mobiles - Google Patents

Amelioration du logiciel pour telephones mobiles Download PDF

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Publication number
WO1997016938A1
WO1997016938A1 PCT/FI1996/000574 FI9600574W WO9716938A1 WO 1997016938 A1 WO1997016938 A1 WO 1997016938A1 FI 9600574 W FI9600574 W FI 9600574W WO 9716938 A1 WO9716938 A1 WO 9716938A1
Authority
WO
WIPO (PCT)
Prior art keywords
mobile station
program
software
block
checksum
Prior art date
Application number
PCT/FI1996/000574
Other languages
English (en)
Inventor
Reijo LEPPÄNEN
Original Assignee
Nokia Telecommunications Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Priority to JP9517090A priority Critical patent/JPH11514760A/ja
Priority to AU68776/96A priority patent/AU6877696A/en
Priority to DE69637195T priority patent/DE69637195T2/de
Priority to EP96934860A priority patent/EP0872138B1/fr
Publication of WO1997016938A1 publication Critical patent/WO1997016938A1/fr

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00—Arrangements for software engineering
    • G06F8/60—Software deployment
    • G06F8/65—Updates
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/04—Protocols specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/2866—Architectures; Arrangements
    • H04L67/30—Profiles
    • H04L67/303—Terminal profiles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/34—Network arrangements or protocols for supporting network services or applications involving the movement of software or configuration parameters 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72406—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by software upgrading or downloading
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H04W8/245—Transfer of terminal data from a network towards a terminal

Definitions

  • the present invention relates to upgrading of software, especially of speech coding software in mobile telephones.
  • different operators of mobile communication networks may use a different speech coding algorithm.
  • the software of a mobile station can be suitable in principle but a more recent version of it may have been developed.
  • Mobile communication systems develop rapidly. When facilities are added or improved, a problem will be how to add these facilities to existing mobile stations .
  • Prior art for improving a mobile station is to change at least partly the software therein in a service shop. This solution is not satisfactory to a user of a mobile station. The maintenance of software in a service shop may not be a good solution for the service shop either as this work rather causes peaks in work load than permanent business.
  • the object of the invention is to upgrade software in a mobile station so that the mobile station need not be taken for this purpose to a service shop.
  • the objects of the invention are achieved with the methods and systems that are characterized by what is stated in the independent claims. Preferred embodiments are disclosed in the dependent claims.
  • the invention is based on the idea that software in a mobile station is arranged to be at least partly variable in response to incoming signals from outside the mobile station.
  • actual executable code is transferred to a mobile station.
  • the program best corresponding to the prevailing conditions is selected from the software preinstalled in the mobile station.
  • the preinstalled and externally loaded software modules cooperate in such a manner that at least parts of each are executed.
  • An advantage of the method and system of the invention is for a user of a mobile station primarily that when new facilities are added, the mobile station need not be changed or even taken to a service shop.
  • FIG 1 shows the elements of the mobile communication system essential for the invention
  • Figure 2 shows an exemplary form of one record of a software database
  • Figure 3 shows process steps when the mobile communication system starts loading a program
  • Figure 4 shows process steps when a mobile station starts loading a program
  • Figures 5 to 6 shows different techniques for changing the software of a mobile station.
  • FIG. 1 shows the elements of the mobile communication system essential for the invention.
  • Mobile stations MS are connected to a base station BTS in a manner known per se.
  • the base station BTS is connected to a base station controller BSC, which is, in turn, connected to a mobile services switching centre MSC.
  • the network elements BTS to MSC form Network Subsystems (NSS) connected to other subsystems and the public switched telephone network PSTN.
  • NSS Network Subsystems
  • the elements of the subsystem NSS may naturally have a tree structure in such a manner that several base stations BTS may be connected to one controller BSC and similarly, several base station controllers BSC to one exchange MSC.
  • Downloading Units DLU attend to the loading of software into mobile stations.
  • Information on the software contained in the mobile stations is maintained in Software Database SDB.
  • Software Database SDB There may be only one or several software databases SDB. If the system includes only one software database SDB, all mobile services switching centres MSC can be connected to this software database via the public switched telephone centre PSTN, for example.
  • the software database SDB corresponds to a great extent to the home location register HLR of the mobile communication system.
  • the loading of software into the mobile station can be started for example so that when the mobile station is registering into the network, the network sends an inquiry to the mobile station about the software it contains.
  • the network deduces that the mobile station does not support this feature and the procedures will end.
  • the mobile station responds to the network as expected and indicates it contains the most suitable software, there is no need for loading the software, and the procedure ends in this case, too.
  • a need for loading the software arises only when the mobile telephone responds to the inquiry to the network relating to the software and the response contains an indication that the software of the mobile station is not in all parts the most suitable one for this network.
  • the loading of software should be started immediately.
  • the network finds out that the mobile station supports full-rate speech coding, but not for example enhanced full-rate speech coding, the network may inform the mobile station that this software supporting enhanced full-rate speech coding can be loaded. The user can then load the software at the required time by calling a specified service number, for example.
  • the enhanced full rate speech coding in the GSM system used herein is only one example of this eature. It is not essential for the invention how the speech coding program operates, but how this program can be transferred into a mobile station. The same method could be used for transferring a more advanced identification procedure, a power saving algorithm or the like.
  • the loading may take place on a traffic channel, for example, in such a manner that the whole capacity of one traffic channel is allocated to the loading of software into one mobile station at a time.
  • the network may then send first a header field containing information on the program to be loaded (program type, function, version, length, etc.) .
  • the header field is followed by the contents of the program divided for example into several frames which may contain a checksum.
  • the mobile telephone receives a frame, it calculates the checksum from the data contained in the frame and compares it to the sent checksum. If the checksums are equal, the frame is stored into memory.
  • the mobile station may request the erroneous frame or the whole software to be loaded again.
  • the whole software is loaded (possibly after repeating some frames) , it can be activated for use. "Activation" does not necessarily mean that the program would be executed immediately but when said program is needed the next time.
  • the network may send new programs on some broadcast control channel to all mobile stations.
  • This embodiment could be implemented by sending continuously new programs, for example.
  • Figure 2 shows an exemplary form of a record of the software database SDB.
  • Field 202 shows the equipment type of the mobile station and field 204 the equipment version.
  • the program version is in field 206.
  • Field 208 shows the number of modules capable of being loaded into the mobile station. Fields
  • 210 to 214 include identification data of the modules in triplets: the identifier of the module, the initial header and the length of the module.
  • the next three fields contain corresponding information for the next module.
  • Field 208 indicates the number of these triplets.
  • the program code of module 1 is in area 224, of module 2 in area of 226, etc.
  • the compatibility of the software may be checked in other ways, for example by means of a checksum or by testing how the mobile station will respond to a specified message sent thereto.
  • Figure 3 shows process steps when the mobile communication system starts loading the software.
  • Figure 3 shows an embodiment where the operation is initiated by the mobile station being turned on in the coverage area of the network (step 302) .
  • the network informs the equipment register of the equipment and program versions in the mobile station.
  • the equipment register sends the equipment and program data to be checked by the DLU of the mobile station type in question.
  • the DLU checks if the mobile station already has the most suitable software for the mobile station type.
  • the DLU makes a special call to the mobile station when the mobile station is free and available.
  • the DLU requests the mobile station to send its identifier data.
  • the mobile station sends its identifier data, e.g.
  • step 316 the DLU informs the mobile station of the new programs to be selected by the user.
  • step 318 it is inquired on the display of the mobile station (or alternatively, by an audio signal) if the user requires loading.
  • step 320 the DLU reads the program from the SDB and supplies "it to the connection.
  • step 322 the mobile station informs the user by a text or audio message that loading has been terminated.
  • FIG 4 shows process steps when the mobile station starts loading the software.
  • the user makes a special call to the service number (the DLU) of the network.
  • Steps 412 to 424 correspond to steps 312 to 324 explained in connection with Figure 3 and they will not be explained again.
  • the changes required by the loading of software according to the invention are examined.
  • software is generally installed in one read-only-memory (ROM) whose contents cannot be changed after the manufacturing stage.
  • ROM refers to a fixedly programmed memory whose contents cannot be changed at least with the equipment in the mobile station.
  • RAM similarly refers to a memory whose contents can be changed with the equipment in the mobile station.
  • Program to be updated refers to the part of the software in a mobile station to be changed. Furthermore, “version” in this context is to be understood to refer widely to all modifications and not just to modifications of a different age.
  • the software of a mobile station of the invention may be updated e.g. in the following ways:
  • the mobile station may contain in the ROM several alternative programs one of which is selected for execution; (ii) the same as (i) but the programs are located in the RAM, and (iii) the ROM and RAM of the mobile station can cooperate so that parts of both are executed.
  • Figure 5 shows how a mobile station may contain several programs in the ROM one of which is selected for processing.
  • the left column signifies a label at the source code level and a corresponding address in the executable code.
  • Pseudocode JMP in the second column refers to a jump to the label mentioned in the third column or to a corresponding address in the executable code.
  • the ellipsis represents the part of the program to be executed.
  • the ROM contains in this example three alternative programs Pa to Pc of which at least one can be activated so that the execution of the program is preceded by a jump in the RAM to the address RAMl to which is initialized a jump to the program (e.g. Pa) which is executed by default if not programmed otherwise.
  • This default situation is described by unbroken arrows between the ROM and RAM.
  • Any one of the programs Pa to Pc can be activated by writing a jump to the program in question in place of the jump instruction in the address RAMl of the RAM. This change is illustrated by an arrow indicated with broken lines between the ROM and RAM.
  • the processor of the mobile station can also make sure that the jump instruction in the address RAMl contains a jump to a meaningful address.
  • the mobile station may initialize the jump instruction in the address RAMl again to be directed to a program executed by default.
  • the fact that the jump instruction is directed to a meaningful address can be ensured for example by calculating the checksum at least from part of the program to be executed.
  • one check byte (CHKBYTE in this example) may be placed in front of the 3 byte jump instruction in the address RAMl and the checksum can be calculated from the produced 4 byte area.
  • a restriction to the above described embodiment is that only such programs can be stored into the ROM whose contents are known at the manufacturing stage. In this way telephones can be manufactured to operate in the operation area of two or more network operators even when the operators require different programs .
  • the contents of the program can be changed in such a manner that the mobile station contains the RAM to which one or more programs or at least parts of them are stored.
  • the ROM and RAM preferably cooperate in such a manner that only the parts to be changed in the program have to be stored in the RAM.
  • Figures 6A and 6B show an example of how the cooperation of the ROM and RAM can be realized.
  • Figure 6a shows an initial situation.
  • Some program in the ROM comprises three parts Pl to P3. As distinct from the situation in Figure 5, the parts Pl to P3 are not here alternatives but different parts of one program, all of which have to be executed.
  • each part Pl to P3 is preceded by a jump to an address in the RAM, to the RAMl to RAM3, respectively, to which a jump back to the parts Pl to P3 of the program in the RAM is initialized.
  • One of these parts Pl to P3 can be replaced by a corresponding part in the RAM so that a jump to the replaced part of the program is written in the place of the jump instruction in the RAM.
  • Replacing part P2 by a second part P2 ' is discussed as an example. A problem is caused by that the contents of the replacing part P2 ' and even its size are not known at the manufacturing stage of the mobile station.
  • the jump instruction of address RAM2 can be replaced only by an instruction of the same length (the length of the jump instruction is typically 3 bytes) , without new data being written into the address RAM3.
  • the address RAM3 cannot be transferred as in the address ROM3 of the ROM there is a jump to this address and the contents of the ROM cannot be changed.
  • the problem is solved in such a manner that the part P2 ' replacing the part P2 is placed in the empty part in the RAM and a jump instruction is placed in the address RAM2 at the beginning of the replacing part P2 ' .
  • the program proceeds to the address ROM3 , a jump to the end of the part P2 ' should also be placed in the same address.
  • a jump to the address RAM3 in this address one jump instruction can be saved by terminating the part P2 ' by a jump instruction to the address RAM3 , as shown by the arrow indicated with broken lines in Figure 6B.
  • the cooperation of the RAM and ROM saves resources of the mobile station, such as storage capacity and program downloading time.
  • the program may be loaded via the radio path; (ii) one of several preinstalled programs can be selected via the radio path; (iii) the program may be loaded by a smart card or a magnetic card; and (iv) the mobile station may cooperate with a general-purpose computer.
  • the loading of a program to a mobile station has already been discussed in connection with the changes the technique requires of a mobile communication network.
  • the selection of one of several preinstalled programs can be realized in the way explained in connection with Figure 5, whereby information on the program to be executed is sent via the mobile communication network.
  • a program can be loaded to a mobile station by a smart card or a magnetic card.
  • the program can be executed directly from a smart card or it can be copied therefrom to the RAM of the mobile station.
  • it can apply the technique explained in connection with Figure 6, by means of which the program of the mobile station can be only partly replaced. 11
  • the mobile station may also cooperate with a general-purpose computer.
  • This embodiment is based on the observation that most users of mobile stations also use a general-purpose computer, either at work or at home.
  • a mobile station may cooperate in many ways with a computer.
  • the program need not be loaded via the radio path but the program is loaded first into the memory of the computer by means of a modem connection of the general-purpose computer.
  • the program may be sent in a diskette readable by the computer.
  • Cooperation with the computer has the advantage that the programs of the users of the mobile station using a computer can be updated by means of diskettes sent by pos .
  • the program When the program is loaded into the memory of the general-purpose computer, it may be transferred therefrom to the memory of the mobile station via a data connection if one is available in the mobile station.
  • the mobile station may have a PCMCIA or other such smart card connection.
  • the data connection of a mobile station may be a wired connection in series or an infrared connection that is becoming more general in laptop computers and their accessories.
  • the mobile station and the computer may both contain a PCMCIA card slot whereby a card of PCMCIA type may first be programmed in the computer and transferred into a mobile station.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Stored Programmes (AREA)
  • Telephone Function (AREA)
  • Telephonic Communication Services (AREA)

Abstract

Ce procédé connu pour améliorer le fonctionnement de postes mobiles consiste à changer au moins partiellement le logiciel utilisé, par exemple dans un magasin d'entretien. La solution n'est pas satisfaisante pour l'utilisateur d'un poste mobile. Conformément à cette invention, le poste mobile (MS) est conçu de manière à ce que son logiciel puisse être changé au moins partiellement. Une base de données (SDB) à logiciels connectée au réseau de communication par téléphones mobiles (NSS) contient les versions les plus récentes de logiciels des postes mobiles. Une unité de téléchargement (DLU) vérifie les logiciels des postes mobiles au moyen de la base de données (SDB) et, lorsque cela est nécessaire, charge le logiciel dans le poste mobile.
PCT/FI1996/000574 1995-10-30 1996-10-29 Amelioration du logiciel pour telephones mobiles WO1997016938A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP9517090A JPH11514760A (ja) 1995-10-30 1996-10-29 移動電話のソフトウェアのアップグレーディング
AU68776/96A AU6877696A (en) 1995-10-30 1996-10-29 Upgrading software in a mobile telephone
DE69637195T DE69637195T2 (de) 1995-10-30 1996-10-29 Software aktualisierung in einem mobiltelefon
EP96934860A EP0872138B1 (fr) 1995-10-30 1996-10-29 Amelioration du logiciel pour telephones mobiles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI955188A FI955188A (fi) 1995-10-30 1995-10-30 Matkaviestimen ohjelmiston ylläpito
FI955188 1995-10-30

Publications (1)

Publication Number Publication Date
WO1997016938A1 true WO1997016938A1 (fr) 1997-05-09

Family

ID=8544285

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1996/000574 WO1997016938A1 (fr) 1995-10-30 1996-10-29 Amelioration du logiciel pour telephones mobiles

Country Status (8)

Country Link
US (1) US20020077094A1 (fr)
EP (1) EP0872138B1 (fr)
JP (1) JPH11514760A (fr)
AT (1) ATE369018T1 (fr)
AU (1) AU6877696A (fr)
DE (1) DE69637195T2 (fr)
FI (1) FI955188A (fr)
WO (1) WO1997016938A1 (fr)

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EP0872138A1 (fr) 1998-10-21
DE69637195T2 (de) 2007-11-22
US20020077094A1 (en) 2002-06-20
JPH11514760A (ja) 1999-12-14
EP0872138B1 (fr) 2007-08-01
FI955188A (fi) 1997-06-24
AU6877696A (en) 1997-05-22
DE69637195D1 (de) 2007-09-13
FI955188A0 (fi) 1995-10-30
ATE369018T1 (de) 2007-08-15

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